The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y. y = StartFraction 3 x 10 Superscript 8 Baseline Over x EndFraction What are the wavelengths for X-rays with frequency 3 × 1018?

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Which of the following parabolas opens down?